| The impacts of four potential bioenergy crops on soil carbon dynamics as shown by biomarker analyses and DRIFT spectroscopy | |
| Zhu, Xuefeng1,2; Liang, Chao1; Masters, Michael D.3,4,5; Kantola, Ilsa B.3,4,5; DeLucia, Evan H.3,4,5,6 | |
| Corresponding Author | Liang, Chao(cliang823@gmail.com) |
| 2018-07-01 | |
| Source Publication | GLOBAL CHANGE BIOLOGY BIOENERGY
 |
| ISSN | 1757-1693 |
| Volume | 10Issue:7Pages:489-500 |
| Abstract | Perennial bioenergy crops accumulate carbon (C) in soils through minimally disturbing management practices and large root inputs, but the mechanisms of microbial control over C dynamics under bioenergy crops have not been clarified. Root-derived C inputs affect both soil microbial contribution to and degradation of soil organic matter resulting in differing soil organic carbon (SOC) concentrations, storage, and stabilities under different vegetation regimes. Here, we measured biomarker amino sugars and neutral sugars and used diffuse reflectance mid-infrared Fourier transform spectroscopy (DRIFTS) to explore microbial C contributions, degradation ability, and SOC stability, respectively, under four potential bioenergy crops, M.xgiganteus (Miscanthus x giganteus), switchgrass (Panicum virgatum L.), a mixed prairie, and a maize (Zea mays L.)-maize-soybean (Glycine max(L.) Merr.) (MMS) rotation over six growing seasons. Our results showed that SOC concentration (g/kg) increased by 10.6% in mixed prairie over the duration of this experiment and SOC storage (Mg/ha) increased by 17.0% and 15.6% in switchgrass and mixed prairie, respectively. Conversion of row crops to perennial grasses maintained SOC stability and increased bacterial residue contribution to SOC in M.xgiganteus and switchgrass by 20.0% and 15.0%, respectively, after 6 years. Degradation of microbe-derived labile SOC was increased in M.xgiganteus, and degradation of both labile and stable SOC increased in MMS rotation. These results demonstrate that microbial communities under perennial grasses maintained SOC quality, while SOC quantity increased under switchgrass and mixed prairie. Annual MMS rotation displayed decreases in aspects of SOC quality without changes in SOC quantity. These findings have implications for understanding microbial control over soil C quantity and quality under land-use shift from annual to perennial bioenergy cropping systems. |
| Keyword | amino sugars biomarker diffuse reflectance mid-infrared Fourier transform spectroscopy maize-maize-soybean rotation microbial residue neutral sugars perennial bioenergy crops soil organic carbon decomposition soil organic carbon stability |
| Funding Organization | National Natural Science Foundation of China ; U.S. DOE, BER Office of Science |
| DOI | 10.1111/gcbb.12520 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[41471218] ; National Natural Science Foundation of China[41671297] ; U.S. DOE, BER Office of Science[DE-SC-18420] |
| WOS Research Area | Agriculture ; Biotechnology & Applied Microbiology ; Energy & Fuels |
| WOS Subject | Agronomy ; Biotechnology & Applied Microbiology ; Energy & Fuels |
| WOS ID | WOS:000434639600006 |
| Publisher | WILEY |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/128191 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Liang, Chao |
| Affiliation | 1.Chinese Acad Sci, Inst Appl Ecol, Shenyang, Liaoning, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Univ Illinois, Energy Biosci Inst, Champaign, IL USA 4.Univ Illinois, Inst Sustainabil Energy & Environm, Champaign, IL USA 5.Univ Illinois, Carl R Woese Inst Genom Biol, Champaign, IL USA 6.Univ Illinois, Dept Plant Biol, Champaign, IL USA |
| Recommended Citation GB/T 7714 | Zhu, Xuefeng,Liang, Chao,Masters, Michael D.,et al. The impacts of four potential bioenergy crops on soil carbon dynamics as shown by biomarker analyses and DRIFT spectroscopy[J]. GLOBAL CHANGE BIOLOGY BIOENERGY,2018,10(7):489-500. |
| APA | Zhu, Xuefeng,Liang, Chao,Masters, Michael D.,Kantola, Ilsa B.,&DeLucia, Evan H..(2018).The impacts of four potential bioenergy crops on soil carbon dynamics as shown by biomarker analyses and DRIFT spectroscopy.GLOBAL CHANGE BIOLOGY BIOENERGY,10(7),489-500. |
| MLA | Zhu, Xuefeng,et al."The impacts of four potential bioenergy crops on soil carbon dynamics as shown by biomarker analyses and DRIFT spectroscopy".GLOBAL CHANGE BIOLOGY BIOENERGY 10.7(2018):489-500. |
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